Q-switched pulse generation with lutetium oxide absorber

Nurul Athirah Mohamad Abdul Ghafar; Nur Farhanah Zulkipli; Rabi’Atul A. Mat Yusoff; Arni Munirah Markom; Moh Yasin; and Sulaiman Wadi Harun

doi:doi:10.1007/s11801-023-2154-6

光电子快报（英文版）, 2023, 19 (3): 129, Published Online: Mar. 18, 2023

Q-switched pulse generation with lutetium oxide absorber

论文大纲

Nurul Athirah Mohamad Abdul Ghafar ¹Nur Farhanah Zulkipli ²Rabi’Atul A. Mat Yusoff ³Arni Munirah Markom ¹Moh Yasin ^4,*and Sulaiman Wadi Harun ^1,4

Author Affiliations

¹ School of Electrical Engineering, College of Engineering, Universiti Teknologi MARA, Shah Alam 40450, Malaysia

² Department of Physics, Faculty of Science and Technology, Airlangga University, Surabaya, Indonesia

³ Department of Physics, Faculty of Science, Universiti Teknologi Malaysia, Skudai, Malaysia

⁴ Photonics Engineering Laboratory, Department of Electrical Engineering, Faculty of Engineering, University of Malaya, Kuala Lumpur, Malaysia

Abstract

A lutetium oxide (Lu2O3) film was proposed and demonstrated for Q-switching operation at 1.55 μm region. It was obtained by solving Lu2O3 powder into isopropyl alcohol and mixing the solution into polyvinyl alcohol (PVA) solution to form a composite precursor solution via stirring, sonicating, and centrifuging processes. The thin film was formed through a drop and dry process and a small piece of this film was integrated into erbium-doped fiber laser (EDFL) cavity to modulate the cavity loss via Q-switching mechanism for pulse generation. The Q-switched laser operated at 1 565 nm with the repetition rate of 75.26 kHz as the pump power was raised to the maximum value of 145.83 mW. The maximum pulse energy of 41.85 nJ was recorded at 145.83 mW pump power. The mode-locked pulse operated at 968.5 kHz with a pulse width of 510 ns was also realized in an extended EDFL cavity. The simple and cost-effective laser should have various applications including material processing, sensing and biomedical areas.

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Nurul Athirah Mohamad Abdul Ghafar, Nur Farhanah Zulkipli, Rabi’Atul A. Mat Yusoff, Arni Munirah Markom, Moh Yasin, and Sulaiman Wadi Harun. Q-switched pulse generation with lutetium oxide absorber[J]. 光电子快报（英文版）, 2023, 19(3): 129.

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